EP 1696665 A2 20060830 - Image processing system, projector information storage medium, and image processing method
Title (en)
Image processing system, projector information storage medium, and image processing method
Title (de)
Bildverarbeitungssystem, Projektor, Informationsspeichermedium und Bildverarbeitungsverfahren
Title (fr)
Système et procédé de traitement d'images, projecteur et support de stockage d'information
Publication
Application
Priority
- EP 04255843 A 20040924
- JP 2003334981 A 20030926
- JP 2004150081 A 20040520
Abstract (en)
An image processing system comprising: image projection means (190) for projecting an image based on an image signal, having a focus control function; sensing means (180) for sensing the projected image along an optical axis which does not coincide with an optical axis of the image projection means (190) in order to generate sensing information; image analysis means (150) for generating brightness index value distribution information which shows a distribution of brightness index values of the projected image in the sensed image, based on the sensing information; correction information generation means (120) for generating projection distance information which shows a projection distance from the image projection means (190) to a projection target, based on focus state information which shows a focus state of the image projection means (190), and generating correction information for correcting the image signal, based on the projection distance information and the brightness index value distribution information; and correction means (130) for correcting the image signal based on the correction information so as to adjust image distortion.
IPC 8 full level
G03B 21/00 (2006.01); G06T 3/00 (2006.01); G06T 7/00 (2006.01); G06T 7/60 (2006.01); G09G 5/00 (2006.01); G09G 5/10 (2006.01); G09G 5/36 (2006.01); H04N 5/74 (2006.01); H04N 9/31 (2006.01); H04N 17/00 (2006.01)
CPC (source: EP KR US)
H04N 5/74 (2013.01 - EP US); H04N 9/31 (2013.01 - KR); H04N 9/3185 (2013.01 - EP US); H04N 9/3194 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1519576 A1 20050330; EP 1519576 B1 20080709; CN 100523989 C 20090805; CN 1601368 A 20050330; DE 602004014865 D1 20080821; EP 1696665 A2 20060830; EP 1696665 A3 20080206; JP 2005124131 A 20050512; JP 3879858 B2 20070214; KR 100698545 B1 20070321; KR 20050030615 A 20050330; TW 200516983 A 20050516; TW I242374 B 20051021; US 2005094108 A1 20050505; US 7334899 B2 20080226
DOCDB simple family (application)
EP 04255843 A 20040924; CN 200410080075 A 20040924; DE 602004014865 T 20040924; EP 06076264 A 20040924; JP 2004150081 A 20040520; KR 20040077418 A 20040924; TW 93129096 A 20040924; US 94407504 A 20040920